View Compilation Error

0_0_40092814_13851.cpp: In function 'int main()':
0_0_40092814_13851.cpp:74:36: error: expected '}' at end of input
   74 |             int b_node = 2 * b + y;
      |                                    ^
0_0_40092814_13851.cpp:69:37: note: to match this '{'
   69 |         for (int i = 0; i < m; i++) {
      |                                     ^
0_0_40092814_13851.cpp:74:36: error: expected '}' at end of input
   74 |             int b_node = 2 * b + y;
      |                                    ^
0_0_40092814_13851.cpp:66:30: note: to match this '{'
   66 |     while (~scanf("%d", &n)) {
      |                              ^
0_0_40092814_13851.cpp:74:36: error: expected '}' at end of input
   74 |             int b_node = 2 * b + y;
      |                                    ^
0_0_40092814_13851.cpp:64:12: note: to match this '{'
   64 | int main() {
      |            ^